Collector-ring.



"'MTENTED AUG. 33, 1906. J. 13. NOEGGERATH.

COLLECTOR mm. APPLIGATIOH FILED SEPT. 22, 1905.

UNITED STALESEEENT OFFICE.

GENERAL ELECTRIC COMPANY, A CORPORATION or NEW roan;

COLLECTOR-RING.

Specification of Letters Patent.

Application-filed September 22.1905. Serial No. 279,625.

To all whom it may cancer-m1 Be it known that I, J AKOB E. NOEG ERATH, a citizen of the United States, residing at Schenectady, county of Schenectady,-State of New York, have invented certain new and useful Improvements in Collector-Rings, of which the followin is a specification.

My invention re ates to collector-rings for dynamo-electric machines; and its objectis to provide a novel construction which is particularly dapted for obtaining good ventilation an which is consequently especially suited for use in the collecting of large currents."

My invention is especially advantageous for use inlarge unipolar machines, since in this type of machine large amounts of current must be collected; but my invention is not limited to this particular type of machine, but may be used to advantage in any machine in which large currents must be taken from or supplied to a moving part.

My invention, broadly considered, consists in building up a collector-ring from a plurality of parallel rings separated by airspaces and provided with portions adapted to engage each other and the support. By

making these engaging portions thicker than the main portions of the rings the latter portions are separated by air-spaces. In order to raise the rings conveniently above the surface of the support, my invention further consists in arranging the engaging portions of the rings in the form of inwardlyprojecting lugs. With this arrangement the main portions of the rings are raised above the support and separated from each other by air-spaces, so that excellent ventilation is secured. I

My inventionwill best be understood by reflerince to the accompanying drawings, in w 10 Figure 1 shows a side view of a portion of a collector-ring arranged in accordance with my invention, and Fig. 2 shows a cross-sectional view of such ring.

In the drawings, A and A represent two parallel rings, which together compose a single collecting-ring.

In Fig. 1 the ring A'is shown broken away for a portion of its length. The parallel rings are provided with inwardly-projecting lugs adapted to 'engageeach other and the support. In order to secure a firm engagement of the two parallel rings, one ring, as A, may be provided with a projecting flange a, adapted to engage a corresponding'groove in the other ringAu This construction is clearly shown in Fig. 2, in which one ring is shown shifted a small amount circumferentially with res ect to the other. The engaging portions 0 the two rings are made thicker rammed Aug. as, 1906.

than the main portions, so that the main portions are separated by an air-space.

In Fig. 2 the projecting lugs are shown tapered, so as to engage the tapering supporting-rings C, mounted (in the periphery of the revolving b'OdyD. B represents insulation separating the collector-rings from the supporting-rings C. With this construction it will be seen that the main portions of the collector-rings are raised above the support and separated iromeach other by an airspace, so that free passage is afforded for the air thrown outward by centrifugal force and good ventilation is secured.

What I claim as new, and desire to secure by Letters Patent of the United States, is-

1. In a dynamo-electric machine, a collector-ring composed of a plurality of parallel rings separated by air-spaces and havin portions adapted to engage each other an the support.

2. In a dynamo-electric machine, a collector-rin composed of a plurality of parallel rings having portions engagin each other and the support, said portions eing thicker than the main portions of the rings so that adjacent rings are separated by an air-space.

3. In a dynamo-electric machine, a collector-ring composed of a plurality of parallel rin s separated by air-spaces and provided wit inwardly-projecting lugs adaptedto engage each other .and the support.

4. In a dynamo-electric machine, a collector-ring composed of a plurality of parallel rings provided with inwardly-projecting lugs adapted to enga e each other and the sulpport and to hold the main portions of t e rings raised abovethe support, said lugs being thicker than the rings, so that the main portions of adjacent rings are separated by an air-space.

5. In a dynamo-electric machine, a collector-ring comprising a pair of parallel rings separated by an air-space and havingportions adapted to engage each other and a support, one of each pair of engaging portions having a flange and the other a correspon'i'ling groove adapted to reeeive said flange.

6. In a dynanio-eleetrie machine, a colleetor-ring composed of a plurality of parallel rings separated by airspaces and prrsvi ed with inwar lly-projeeting lugs a.(la l o engage each other and tapered on their outer surfaces to engage a support 7 In a (lylllLIllO-BlOGUlC maehine, a colleetor-ring comprising a pair of" parallel rings separated by an air-spaee and provided with inwardly-projeeting lugs adapted to engage each other and a support the enter enrlaees l of said lugs being tapered, and the inner l surlaee ol' :1 lug on one ring being provided 1 with. a flange and the inner snrlaee ol' the lire ion the other ring having a ()ll(H] ()H(llllg l groove 1 ln witness whereol' l have hereunto set my I I hand this 19th day of Sept ember, 1905.

JAIQUB l v itz'iesses:

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